Engine control mechanism



J. LE G. SKINNER 2,353,812

ENGINE CONTROL MECHANISM Nov. 28, 1944.

Filled Jan. 20, 1943 2 Sheets-Sheet 2 v INVENTOR BY rrzz 1944- J. LE G. SKINNER ENGINE CONTROL MECHANISM Filed Jan. 20, 1943 2 Sheets-Sheet l Patented Nov. 28, 1944 U 2,363,812 Engine CONTROL James Le Grand Skinner, Erie,,P a., assignor to Skinner Engine Company, Erie, Pa., 2. corporation of Pennsylvania d Applioation' Januar 20, 1943;. Serial Not ivasss The present invention is designed to provide an engine with control, through manual or pres suren'ieans, and also provide the engine with a' speed control, the speed control providing the i the engine.

3T is"j'ournall'ed on apin 3 3* on aflywheel Hot The arm is provided with a weight at one end and connected by a weighted link 36at the opposite end with a centripetally acting desirable safety against the running away of the springtl; Thisvalvegear is one of common conengine,particularly through the removalofload. struction so far as at present described except Features and details of the invention will! apasto the endvvise movement of thelay shaft; pear from the specification and claims. l The end of th lay shaft opposite thesleeve 18 Preferred embodiments of the invention are is-providedwith a head 38 and a spring 39 exerts illustrated in the accompanyingdrawingsasfol yielding pressure holding the lay shaft to the lows: f right, as shown in Fig. 1. An extension 38a pro- F ig'f 1 a side elevation, partly in section, of jects from thehe'ad 38into a pressure cylinder 40; themechanisml d Ahead 41 on the extension 38a is operated upon Fig. 2 a view of the valve actuating'mechanism. by a diaphragm 4 2 secured in the chamber All partly in section, on the line 2-2 in Fig. 1. and subjectedto pressure directed through apipe Fig. 3 an end view of one of the operating cams. 4 3 t e diaphragnwm the Shaft O Fig: 4 a side elevation of the same cam; theleft whenpressureisdelivered and the spring Fig. 5 an end View from the opposite end of r tl ih th lay Sha t w d the same cam. d l The cams are'illustratedin Figs. 3 to 8. These Fig. 6 an end viewof the cam at the'opposite are of similar shape and are designed to operate end of theengine cylinder. l alternately. They are provided with hubs M se- Fig. 7 a side elevation of the cami cured by keys 45-on the lay shaft. Cam sleeves 41 Fig. 8 an elevation of thecam from theoppohave grooved connections 48 with extensions 46} site end-from Fig. 6. J I on the-hubs and are secured thereon by screws Fig. 9a sectional View of an alternative manual j 19. The card sleeves have a oven-11mi s 61054 control mechanism. ing portion 50' and a lift portion 5|; this lift porl marks an engine cylinder; la an engine frame, o b inclined ofconical ap 2 a piston operating in the cylinder, 3 inlet valve t a is shifted either manually ports for the cylinder, 4 inlet valves of the poppet thro h he pre n r. he am surface 5| type controlling the inlet ports, 5 valve stems is moved to Present different p o of the inleading from the valves, 6 glands for th valve cline to provide the desired lift for the valve. At stems, 1 heads on the stems, 8 springs exerting the same time the y shaft is reciprocated it is closing pressure on the valves, 9 valve lifting arms, oscillated through the mechanism leading from I0 adjusting screws on the arms, I I rock arms 1 e permitting, oweve the normal adapted to lift the valves, I2 rockerpins jourcontrol through variations n lift e to axial nalled in brackets l3 mounted on the engine cyl- .sh t e t inclined cam u f w ve inder, M rock arms on the rocker pins 12, these the Speed becomes abnormal, the governor t e rock arms being operated by cams l5 and l5a control and reduces the lay shaft travel to a point on a lay shaft Hi, the cams being locked on th that will provide a desired speed at the minimum lay shaft by keys I57). The lay shaft is jouroadnalled and slidingly mounted in b ari g 11 i In the alternative construction the head 38b is the brackets It, substituted for the head 38 and this is actuated A sleeve I8 is journalled in a cap IS on the y ascrew 52 operat d by a hand Wheel the bracket at the drive end .of the cylinder. This screw operated through an extension 54 of the sleeve 18 is splined on the lay shaft by a spline bracket [3. Thus the lay shaft may be manually 28 looking the sleeve rotatively with the lay positioned to give any valve lift desired. shaft but permitting sliding movement. An arm In the operation of the device, the governor 2| extends from the sleeve l8 and a ball joint 22 controls the speed in the ordinary manner by connects the arm 2| through a link 23 and a joint varying the throw of the governing eccentric 31, 24 with a rock arm 25. The rock arm is mounted which variation is communicated through the rod on a shaft 26 secured on a bracket 21 on the 30, bell crank lever 2825, rod 23, and rock arm engine frame. d 22 to the shaft l6. This variation in throw varies I An arm 28 is fixed with the arm 25 and is aim the lift to the valve and governs the valve in the nected by a joint 29 with the valve rod 30 extendordinary manner. If, however, it is desired to m to a joint 3| on a governor arm 32. The arm change the sp a l y o Otherwise, a t r control is provided which is effected by shifting the lay shaft endwise. As shown, this is done by the pressure scheme involving the moving diaphragm M which forces the push rod 38a, the action of the rod being communicated through the sleeve 38 to the end of the shaft. This action of the shaft carries the actuating cams endwise and presents different cam surfaces to the valve lifting bell crank l4, and consequently makes a manual controlwhich is effective regardless of the governor action.

What I claim as new is:

1. In an engine control mechanism, the combination of controlling inlet valves, a valve actuating oscillatorily reciprocating shaft, mechanism communicating movement of the shaft to the valves, and two controlling means for the mecheffective through endwise relative movement of the shaft and the other made efiective through variation of the oscillatorily reciprocative movement communicated from the shaft to the valves.

2.. In an engine control mechanism, the combination of controlling inlet valves, a valve actuating oscillatorily reciprocating shaft, mechanism communicating movement of the shaft to the valves, and two controlling means forthe mechanism, one responsive to speed of the engine and the other responsive to a direct control action, one of said controls being made effective through endwise relative movement of the shaft and the other made effective through variation of the oscillatorily reciprocative movement communicated from the shaft to the valves.

bination of controlling inlet valves, a valve actuating controlling shaft having actuating cams varying in throw circumferentially and longitu-' dinally, means actuated by the cams communicating the action of the cams to the valves, and means varying the rotatively directed movement of the shaft for one control and moving the shaft endwise to effect a second control through varia ing control at an abnormal speed.

1 anism, one of said controlling means being'made tion in the active cam surfaces.

5. In an engine control mechanism, the combination of controlling inlet valves, a governor controlled oscillatorily reciprocating shaft having actuating cams varying in throw circumferentially and longitudinally arranged on said shaft, means actuated by the, cams communicating the rotativelydirected movement of the shaft to the valves, and means moving the shaft endwise for a direct, control of the valves, the governor tak- 6. In an engine control mechanism,

, valves, and two controlling means for the mech:

anism, one of said controlling means being made effective through endwise movement of the means and the other made effective through variations of movement responsive to rotative action of the shaft as communicated through the mechanism to the valves.

7. In an engine control mechanism, thecombination of controlling inlet valves, a valve actuating oscillatorily reciprocating shaft, mechanism communicating movement of the shaft to the valves, and two controlling means for the shaft, one of said controlling means being made effective through endwise movement of the shaft and the other made effective through variations in the oscillatorily reciprocating movement of the shaft.

8. In an engine control mechanism, the com bination of controlling inletfvalves, a valve actuating oscillatorily reciprocating shaft, mechanism communicating movement of the shaft to the valves, and two controlling means for the mechanism, one of said controlling means being made effective through endwise relative movement of the means and the other made effective through variation of the oscillatorily reciproca' tive movement communicated from the shaft to the valves. r

J. LE GRAND SKINNER.

the combination of controlling inlet valves, a valve ac- "tuating shaft having rotatively directed and endwise movement'mechanism communicating the l I rotatively directed movement of the shaft to the 

